What caused the disappearance of land bridges?

Latin america's amazon rainforest provides many resources for the world's residents, including wood, water, and medicinal resources, as well as the oxygen processed by its many trees and plants. choose one resource and describe how it benefits the world. how would you protect this resource and future generations experience it?

Relatively steep zone that is compared with the shelf that marks the boundary between continental crust and ocean crust.

Why might the new countries be interested in joining the european union (eu)?